H3C Technologies H3C S12500 Series Switches - Manual (Page 30)

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POS interface configuration examples
Directly connecting switches through POS interfaces
Network requirements
As shown in Figure 3 ,
• Use a pair of optical fibers (for receiving and sending data) to connect the POS interfaces on Switch
A and Switch B.
• Enable PPP encapsulation on the interfaces.
Figure 3 Network diagram
Configuration procedure
1. Configure Switch A:
# Configure interface POS 2/1/1, setting its physical parameters to defaults.
system-view
[SwitchA] interface Pos 2/1/1
[SwitchA-Pos2/1/1] ip address 10.110.1.10 255.255.255.0
[SwitchA-Pos2/1/1] link-protocol ppp
[SwitchA-Pos2/1/1] mtu 1500
[SwitchA-Pos2/1/1] shutdown
[SwitchA-Pos2/1/1] undo shutdown
2. Configure Switch B:
# Configure interface POS 2/1/1.
system-view
[SwitchB] interface Pos 2/1/1
# Set the clock mode to master and other physical parameters to defaults.
[SwitchB-Pos2/1/1] clock master
[SwitchB-Pos2/1/1] ip address 10.110.1.11 255.255.255.0
[SwitchB-Pos2/1/1] link-protocol ppp
[SwitchB-Pos2/1/1] mtu 1500
[SwitchB-Pos2/1/1] shutdown
[SwitchB-Pos2/1/1] undo shutdown
You can check the connectivity between the POS interfaces by using the display interface pos
command and test network connectivity by using the ping command.
Connecting switches through POS interfaces across frame relay
Network requirements
As shown in Figure 4 , connect switches to a public frame relay network through POS interfaces. The
switches are premise equipment that work as DTE side of frame relay.